Rahu and Ketu are two nodes of Moon and they are regarded as full-fledged planets in Vedic Astrology. They are considered as most dreaded planets due to their heavy karmic effects.
Rahu is the Dragon’s head and Ketu as Dragon’s tail. Both of them form a malefic yoga, known as KalSarp Yoga.
There are multiple reasons and views on this yoga or dosha.
Most of the the Kalasarpa dosha effects are negative, while few can be positive too.
Rahu or Ketu gives sudden positive changes which are huge and can happen overnight or within a span of few days.
But these effects are temporary and will vanish soon.
Rahu is more independent than Ketu in giving karmic effects.
In Astrology, this Dosha or Yoga is supposed to have direct impact on the following events :
It causes deterioration of health and reduces longevity.
It causes imprisonment or serious accident.
It causes separation, divorce and marital discord.
It causes poverty and destruction of wealth.
It causes destruction of business and loss of job.
It causes destruction of kingdoms and rulers.
It causes downfall of most powerful persons in politics.